/* ==========================================================================
   Reusable UI Components — SCS Synergy
   ==========================================================================
   Header, mobile menu, footer, cards, banners, and shared interface pieces.
   Mobile-first; layout breakpoints live in responsive.css.
   ========================================================================== */

/* ------------------------------------------------------------------
   1. Header
   ------------------------------------------------------------------
   Sticky header — starts transparent over hero content, becomes solid
   dark navy when the user scrolls (JS adds .header--scrolled).
   ------------------------------------------------------------------ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background-color: transparent;
  transition:
    background-color var(--transition-base),
    box-shadow var(--transition-base);
  z-index: var(--z-sticky);
}

.header--scrolled {
  background-color: rgba(15, 23, 42, 0.98);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  height: 100%;
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* Logo ------------------------------------------------------------ */
.header__logo {
  flex-shrink: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-extrabold);
  color: var(--text-white);
  letter-spacing: var(--tracking-tight);
}

.header__logo:hover {
  color: var(--text-white);
}

.header__logo span {
  color: var(--primary);
}

.header__logo img {
  height: 36px;
  width: auto;
}

/* Desktop navigation ---------------------------------------------- */
.header__nav {
  display: none; /* shown at desktop via responsive.css */
  align-items: center;
  gap: var(--space-7);
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.header__nav-link {
  position: relative;
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: rgba(255, 255, 255, 0.85);
  text-transform: capitalize;
  letter-spacing: var(--tracking-wide);
  padding-block: var(--space-2);
  transition: color var(--transition-base);
}

/* Hover underline effect */
.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width var(--transition-base);
}

.header__nav-link:hover,
.header__nav-link--active {
  color: var(--text-white);
}

.header__nav-link:hover::after,
.header__nav-link--active::after {
  width: 100%;
}

/* CTA button in header (far right) */
.header__cta {
  display: none; /* shown at desktop via responsive.css */
}

/* Hamburger toggle ------------------------------------------------ */
.header__menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 30px;
  height: 30px;
  cursor: pointer;
  z-index: calc(var(--z-overlay) + 1);
}

.header__menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-white);
  border-radius: 2px;
  transition:
    transform var(--transition-base),
    opacity var(--transition-fast);
  transform-origin: center;
}

/* Hamburger → X animation */
.header__menu-toggle--active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__menu-toggle--active span:nth-child(2) {
  opacity: 0;
}

.header__menu-toggle--active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ------------------------------------------------------------------
   2. Mobile Menu
   ------------------------------------------------------------------
   Slide-in panel from right on mobile/tablet.
   ------------------------------------------------------------------ */

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  width: 300px;
  max-width: 85vw;
  height: 100vh;
  background-color: var(--bg-dark);
  padding: calc(var(--header-height) + var(--space-6)) var(--space-6) var(--space-6);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  z-index: var(--z-overlay);
  overflow-y: auto;
}

.mobile-menu.is-open {
  transform: translateX(0);
}

/* Backdrop overlay */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-base),
    visibility var(--transition-base);
  z-index: calc(var(--z-overlay) - 1);
}

.mobile-menu-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-menu__link {
  display: block;
  padding: var(--space-3) 0;
  font-family: var(--font-heading);
  font-size: var(--text-md);
  font-weight: var(--weight-medium);
  color: var(--text-white);
  border-bottom: 1px solid var(--border-dark);
  transition: color var(--transition-fast);
}

.mobile-menu__link:hover,
.mobile-menu__link--active {
  color: var(--primary);
}

.mobile-menu__cta {
  margin-top: var(--space-6);
}

/* Full-overlay alternative (used for simpler mobile nav) */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-dark);
  z-index: var(--z-overlay);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-nav--active {
  display: flex;
  opacity: 1;
}

.mobile-nav__link {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--text-white);
  transition: color var(--transition-base);
}

.mobile-nav__link:hover {
  color: var(--primary);
}

/* ------------------------------------------------------------------
   3. Section Title
   ------------------------------------------------------------------
   Reusable heading block: "// subtitle" + main heading.
   Used as the intro for nearly every content section.
   ------------------------------------------------------------------ */

.section-title {
  margin-bottom: var(--space-7);
}

.section-title .subtitle {
  display: block;
  margin-bottom: var(--space-3);
}

.section-title__heading {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--text-dark);
}

.bg-dark .section-title__heading {
  color: var(--text-white);
}

/* Accent-coloured word within a heading */
.section-title__heading span {
  color: var(--primary);
}

/* Legacy aliases (from initial scaffold) */
.section-subtitle {
  display: inline-block;
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--primary);
  margin-bottom: var(--space-4);
}

.section-subtitle--light {
  color: rgba(255, 255, 255, 0.7);
}

.section-heading {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-extrabold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-5);
  color: var(--text-dark);
}

.section-heading--white {
  color: var(--text-white);
}

/* ------------------------------------------------------------------
   4. Service Card
   ------------------------------------------------------------------ */

.service-card {
  position: relative;
  background-color: var(--bg-white);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

/* Coloured icon box */
.service-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background-color: var(--primary);
  margin-bottom: var(--space-5);
  font-size: var(--text-xl);
  color: var(--text-white);
}

/* Icon colour variants — subtle shade differences, same blue family */
.service-card__icon--purple { background-color: var(--primary-hover); }
.service-card__icon--green  { background-color: var(--secondary); }
.service-card__icon--dark   { background-color: var(--primary-dark); }

.service-card__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-3);
}

.service-card__description {
  font-size: var(--text-sm);
  color: var(--text-light);
  margin-bottom: var(--space-4);
}

/* Bullet-style links list */
.service-card__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.service-card__links a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-dark);
  transition: color var(--transition-fast);
}

.service-card__links a::before {
  content: '\2192'; /* right arrow */
  color: var(--primary);
  font-size: var(--text-base);
  transition: transform var(--transition-fast);
}

.service-card__links a:hover {
  color: var(--primary);
}

.service-card__links a:hover::before {
  transform: translateX(4px);
}

/* ------------------------------------------------------------------
   5. Team Card
   ------------------------------------------------------------------ */

.team-card {
  text-align: center;
}

.team-card__image-wrapper {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.team-card__image-wrapper img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.team-card:hover .team-card__image-wrapper img {
  transform: scale(1.05);
}

.team-card__name {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-1);
}

.team-card__role {
  font-size: var(--text-sm);
  color: var(--text-light);
}

/* ------------------------------------------------------------------
   6. Testimonial Card
   ------------------------------------------------------------------ */

.testimonial-card {
  background-color: var(--bg-white);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-card-hover);
}

/* Decorative quote mark */
.testimonial-card__quote-icon {
  font-size: var(--text-4xl);
  line-height: 1;
  color: var(--primary);
  margin-bottom: var(--space-3);
  font-family: Georgia, serif;
}

.testimonial-card__text {
  font-size: var(--text-base);
  font-style: italic;
  color: var(--text-dark);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-5);
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial-card__author-photo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.testimonial-card__author-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--text-dark);
}

.testimonial-card__author-company {
  font-size: var(--text-xs);
  color: var(--text-light);
}

/* ------------------------------------------------------------------
   7. Counter Box
   ------------------------------------------------------------------ */

.counter-box {
  text-align: center;
  padding: var(--space-5);
}

.counter-box__number {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: var(--weight-extrabold);
  color: var(--primary);
  line-height: var(--leading-none);
  margin-bottom: var(--space-2);
}

/* Optional suffix ("+", "%", "K") */
.counter-box__suffix {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--primary);
}

.counter-box__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-light);
}

.bg-dark .counter-box__label {
  color: rgba(255, 255, 255, 0.7);
}

/* ------------------------------------------------------------------
   8. CTA Banner
   ------------------------------------------------------------------
   Full-width dark/gradient banner with heading + button.
   ------------------------------------------------------------------ */

.cta-banner {
  position: relative;
  padding: var(--space-9) 0;
  background:
    linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  overflow: hidden;
}

/* Background-image variant */
.cta-banner--image {
  background-size: cover;
  background-position: center;
}

.cta-banner--image::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--bg-overlay);
}

.cta-banner__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-5);
  z-index: var(--z-base);
}

.cta-banner__heading {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--text-white);
  max-width: 700px;
}

/* ------------------------------------------------------------------
   9. Page Banner (Inner-page Hero)
   ------------------------------------------------------------------
   Dark background with overlay, page title, and breadcrumb.
   ------------------------------------------------------------------ */

.page-banner {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 300px;
  padding-top: calc(var(--header-height) + var(--space-8));
  padding-bottom: var(--space-8);
  background-color: var(--bg-dark);
  background-size: cover;
  background-position: center;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--bg-overlay);
}

.page-banner__inner {
  position: relative;
  z-index: var(--z-base);
}

.page-banner__title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-extrabold);
  color: var(--text-white);
  margin-bottom: var(--space-3);
}

/* Breadcrumb */
.page-banner__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
}

.page-banner__breadcrumb a {
  color: var(--primary);
  transition: color var(--transition-fast);
}

.page-banner__breadcrumb a:hover {
  color: var(--text-white);
}

.page-banner__breadcrumb .separator {
  color: rgba(255, 255, 255, 0.5);
}

/* ------------------------------------------------------------------
   10. Footer
   ------------------------------------------------------------------
   Dark navy background. Three contact columns at top, nav links
   and copyright at bottom.
   ------------------------------------------------------------------ */

.footer {
  background-color: var(--bg-dark);
  color: var(--text-white);
  padding-top: var(--space-9);
}

/* Contact info row — three columns */
.footer__contact-row {
  display: grid;
  gap: var(--space-6);
  padding-bottom: var(--space-7);
  border-bottom: 1px solid var(--border-dark);
}

.footer__contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.footer__contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  flex-shrink: 0;
  border-radius: var(--radius-full);
  background-color: var(--primary);
  color: var(--text-white);
  font-size: var(--text-lg);
}

.footer__contact-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-light);
  margin-bottom: var(--space-1);
}

.footer__contact-value {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-white);
  margin-bottom: 0;
}

.footer__contact-value a {
  color: var(--text-white);
  transition: color var(--transition-fast);
}

.footer__contact-value a:hover {
  color: var(--primary);
}

/* Navigation row */
.footer__nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--border-dark);
}

.footer__nav-link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  transition: color var(--transition-fast);
}

.footer__nav-link:hover {
  color: var(--primary);
}

/* Separator between nav links */
.footer__nav-link + .footer__nav-link::before {
  content: '|';
  margin-right: var(--space-4);
  color: rgba(255, 255, 255, 0.25);
}

/* Bottom bar — copyright */
.footer__bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding-block: var(--space-6);
}

.footer__copyright {
  font-size: var(--text-sm);
  color: var(--text-light);
  margin-bottom: 0;
}

/* Legacy aliases (from initial scaffold) */
.footer__info-row {
  display: grid;
  gap: var(--space-6);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--border-dark);
}

.footer__info-box {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.footer__info-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background-color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.footer__info-icon i {
  font-size: var(--text-lg);
  color: var(--text-white);
}

.footer__info-content {
  display: flex;
  flex-direction: column;
}

.footer__info-text {
  font-size: var(--text-sm);
  color: var(--text-white);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-1);
}

.footer__info-label {
  font-size: var(--text-xs);
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

/* ------------------------------------------------------------------
   11. Scroll-to-top Button
   ------------------------------------------------------------------ */

.scroll-top-btn {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--primary);
  color: var(--text-white);
  border: none;
  border-radius: var(--radius-full);
  font-size: var(--text-lg);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition:
    opacity var(--transition-base),
    visibility var(--transition-base),
    transform var(--transition-base),
    background-color var(--transition-fast);
  z-index: var(--z-sticky);
}

.scroll-top-btn.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top-btn:hover {
  background-color: var(--primary-hover);
  transform: translateY(-3px);
}

/* Legacy alias */
.scroll-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--primary);
  color: var(--text-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-md);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
  z-index: var(--z-sticky);
  border: none;
}

.scroll-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background-color: var(--primary-hover);
  transform: translateY(-3px);
}

/* ------------------------------------------------------------------
   12. Buttons (component-level variants)
   ------------------------------------------------------------------
   Base .btn is defined in base.css.  These are BEM-style aliases
   kept for backward compatibility with existing markup.
   ------------------------------------------------------------------ */

.btn--primary {
  background-color: var(--primary);
  color: var(--text-white);
  border-color: var(--primary);
}

.btn--primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background-color: var(--primary-hover);
  color: var(--text-white);
  border-color: var(--primary-hover);
}

.btn--secondary:hover {
  background-color: var(--secondary);
  border-color: var(--secondary);
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background-color: transparent;
  color: var(--text-white);
  border-color: var(--text-white);
}

.btn--outline:hover {
  background-color: var(--text-white);
  color: var(--primary-dark);
}

.btn--green {
  background-color: var(--primary);
  color: var(--text-white);
  border-color: var(--primary);
}

.btn--green:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ------------------------------------------------------------------
   13. Form Elements (shared across contact / newsletter forms)
   ------------------------------------------------------------------ */

.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-2);
  color: var(--text-dark);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px var(--space-4);
  font-size: var(--text-base);
  color: var(--text-dark);
  background-color: var(--bg-light);
  border: 1px solid var(--border-colour);
  border-radius: var(--radius-sm);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-input.is-invalid,
.form-textarea.is-invalid {
  border-color: #e74c3c;
}

.form-error {
  font-size: var(--text-xs);
  color: #e74c3c;
  margin-top: var(--space-1);
  display: none;
}

.form-error.is-visible {
  display: block;
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}